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Simplifying 7x + 4(2x + 3) = 147 Reorder the terms: 7x + 4(3 + 2x) = 147 7x + (3 * 4 + 2x * 4) = 147 7x + (12 + 8x) = 147 Reorder the terms: 12 + 7x + 8x = 147 Combine like terms: 7x + 8x = 15x 12 + 15x = 147 Solving 12 + 15x = 147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 15x = 147 + -12 Combine like terms: 12 + -12 = 0 0 + 15x = 147 + -12 15x = 147 + -12 Combine like terms: 147 + -12 = 135 15x = 135 Divide each side by '15'. x = 9 Simplifying x = 9
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